An estimation method of frequency response functions and its application to microtremor
In microtremor observation, forces are inputted to multipoint of the system. However, input forces cannot be specified. The authors have proposed a new method to estimate Frequency Response Functions, which is a scheme to extract coherent components of the system non-parametrically. This paper presents the availability of the proposed method for applying to microtremor records of an existing bridge. Consider items are as follows. (1)The modal characteristics identified by the proposed method in combination with an experimental modal analysis method, (2)comparison with results of forced vibration tests (FVTs), and (3)comparision with results of eigenvalue analysis of numerical model referred to FVT results.
frequency response functions multipoint observation system modal characteristics an existing bridge microtremor observation records output only data
Masataka NAKAMURA Jun-ichi SUZUMURA Kazufumi HANADA
Research associate, Dept. of Civil Eng., Coll. of Sci. and Tech., Nihon University, Tokyo, Japan Assistant professor, Dept. of Civil Eng., Coll. of Sci. and Tech., Nihon University, Tokyo, Japan Professor, Dept. of Civil Eng., Coll. of Sci. and Tech., Nihon University, Tokyo, Japan
国际会议
14th World Conference on Earthquake Engineering(第十四届国际地震工程会议)
北京
英文
2008-10-12（万方平台首次上网日期，不代表论文的发表时间）